The customer observed a falsely elevated magnesium result for one patient on an architect c8000 analyzer.The following data was provided (customer¿s reference range is 1.5-2.3 mg/dl): sample id (b)(6) initial result was 6.2, repeats were 1.8 and 1.8 mg/dl, when repeating on an architect c4000 the result was 1.7 mg/dl.There was no impact to patient management reported.
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The complaint investigation for a falsely elevated architect magnesium result included a review of data and information provided by the customer, search for similar complaints, ticket trending review, labeling review, and device history record review.Trending review determined no related trend for the increased result for the product.Return testing was not completed as returns were not available.Data provided by the customer showed that the sample was retested on the complaint instrument, and on a different instrument, with normal results that were similar between the instruments.Manufacturing documentation was reviewed and did not identify any issues.Labeling was reviewed and sufficiently addresses the customer's issue.Based on the information provided and abbott diagnostics¿ complaint investigation, no systemic issue or deficiency for the architect magnesium, lot number 87180un21, was identified.
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